Darren McFadden out too

Running back Darren McFadden is out at least two weeks with a broken orbital bone. He hurt it on Wednesday when he apparently took a helmet to the cheek on what was a great block of Quentin Groves.

“Darren has a little small fracture of his orbit,” coach Hue Jackson said. “So he’ll be out a couple weeks. It’s interesting because last year he was out a couple of weeks and it was a hamstring. Just little things here and there, and he’ll be fine. We’ll get him back out here and keep on rolling.”

Rock Cartwright and Louis Rankin were the only available running backs on Thursday as Michael Bush remained unsigned and Taiwan Jones and Michael Bennett were nursing minor injuries.

My understanding with Bush is that the restricted free agent has not signed his first- and third-round tender and doesn’t technically have to be back until Aug. 19. The Raiders would send him a letter on the 15th if he is not here and tell him that he has until the 19th to report or else face going on the “exempt list.” That would result in a three-game suspension.

“Well, Michael’s going to be here at some point,” Jackson said. “I truly believe that. Obviously we’d love to have him here today. He wasn’t. I think that’s going to get resolved here soon.

“Do we want Michael Bush back here? Yes. I know he’ll be back here as soon as he can, but the guys that are out there right now are practicing their tails off and that’s all we can do.”